Hi, I'm using tvp5150 for discreting sync of composited video, but I found there are some problems. When different video sourses input tvp5150, the time difference between the head of vsync gotten from 5150 and the head of original composited video are different every time. If like this, it's difficult to realize external sync via tvp5150. I hope you can tell me something about it. Can the time difference between the head of vsync gotten from 5150 and the head of original composited video keep same according to doing some registers configuration? Or other ways?
The timing of VSYNC relative to active video should be the same for all 525-line formats. The timing for all all 625-line formats should also be the same, but the timing between 525-line and 625-line formats will be different.